Excess Sludge Production and the Stable Operational Condition of a Submerged Membrane Activated Sludge Process

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

Chandika Prasad Bhatta¹  Akira Matsuda¹  Yoshiaki Maehana¹  Kenji Kawasaki¹  Daisuke Omori²  Mami Yamaguchi¹ 

[1] Department of Applied Chemistry, Ehime University;Environmental Facilities, Daiki Company

关键词: Activated Sludge Process;    Submerged Membrane;    Excess Sludge Production;    Stable Operational Condition;    Sludge Retention Time;   

DOI  :  10.1252/jcej.39.237

来源: Maruzen Company Ltd

【 摘 要 】

References(10)Cited-By(3)Laboratory scale submerged membrane activated sludge process (SMASP) units were operated at various sludge retention times (SRTs) (9.6–498 d) and BOD loadings (0.25–1.3 kg/(m3·d)). Under these conditions, the quantity of excess sludge production and the process stability was studied, using synthetic wastewater. The stabilized MLSS was increased with an increase of SRT and BOD loading. The excess sludge production was decreased with an increase of SRT and decrease of BOD loading. The excess sludge production in SMASP at long SRT and low BOD loading was significantly smaller than the conventional activated sludge process. Various test conditions proved that the long SRT and low BOD loading were suitable operational conditions for long stable operation of SMASP.

【 授权许可】

Unknown